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Introduction:
Class II Standard Platinum Resistance(Zinc Point Quartz Tube) is a standard apparatus to measure temperature according to the characteristic of the resistance value of platinum wire changing with single value of temperature. The ITS-90 International temperature scale specifies that standard platinum resistance thermometers are interpolated instruments from 13.8033K(-259.3467℃) to 961.78℃. Standard platinum resistance thermometers are the thermometers with the highest accuracy and the best stability when measuring temperature under current production conditions.
Standard platinum resistance thermometers are measurement standards used to transmit international temperature scales. In the verification of various standard mercury thermometers; Industrial platinum and copper thermal resistance thermometers; Precision temperature timing is used as standard. It can also be directly used for temperature measurement with high accuracy requirements.
Technical indicator:
Temp.range | 13.8033K～273.16K |
Nominal resistance at the triple point of water（Ω） | 25 |
Sensitivity Ω/℃ | 0.1 |
Resistance ratio | WHg≤0.844235 |
Casing type | Quartz |
Outer diameter of casing | Φ7mm |
Length of casing | 520 |
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